<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    /* public  */

    /* 去掉a,input,button点击后的默认背景*/
    a,
    input,
    button {
      -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    }

    /*清除ios下按钮圆角*/
    input,
    button {
      -webkit-appearance: none;
      -moz-appearance: none;
      appearance: none;
      border-radius: 0;
    }

    /*设置禁止文字选中*/
    body {
      -webkit-user-select: none;
      -moz-user-select: none;
      -ms-user-select: none;
      user-select: none;
      font-family: Helvetica;
    }

    /*设置用户禁止修改字体大小*/
    body * {
      -webkit-text-size-adjust: 100%;
    }

    * {
      margin: 0;
      padding: 0;
    }

    ul {
      list-style: none;
    }

    a {
      text-decoration: none;
    }

    img {
      vertical-align: top;
    }
  </style>
</head>

<body>

</body>

</html>